Monocular distance measurement method based on camera imaging geometrical relationship and system thereof

• Main Authors: LI FENG, LING QIANG, XU YONGHUA, ZHA YIXIN
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention relates to a monocular distance measurement method based on a camera imaging geometrical relationship and a system thereof, and the method comprises the steps: S1, obtaining a foresight traffic image, inputting the foresight traffic image into a target detection network, obtaining a target detection frame in the foresight traffic image, and taking the central point of the lower edge of the target detection frame as a projection point P of a detected object relative to the ground in a world coordinate system; S2, obtaining the focal length of the camera, the pixel center point of the imaging surface of the camera and the position of the optical axis in a world coordinate system through calibration; measuring the actual height of the camera; and inputting a camera imaging geometrical relationship model to calculate the vertical distance between the camera and the measured object. According to the method provided by the invention, the collected image can be directly detected through the monocular c